Clamp



April 6 1926.

R. GOUIRAND ET AL CLAMP Filed May 19 1925 INVENTOR. Pena Goa/ran BY 40 052;? C/Z Z A TTO E Patented Apr. 6, 1926.

UNITED STATES RENE GOU'IBAND AND nueus'rn racnn, 01 NEW roux, I. Y.

cmul'r.

Application filed Kay 19, 1925. Serial No. 81,888.

To all whom it may concern:

and Auous'rn PACHE, a citizen of the United State and a citizen of Switzerland, respectively, both residing at New York city, county and State of New York, have invented a certain new and useful Clamp, of which the following is a specification.

This invention is a clamp and more particularly a clamp of the type embodying a suitableclamping member cooperating with a flexible band which may be placed under tension to effect the clamping operation. The invention is adapted for many uses, but will be hereinafter described in the interest of clearness in connection with its employment as a hose clamp. I v

In its preferred practical form, the invention embodies a clamping or tie member to which one end of 'a' flexible band is adapted to be secured and said tie member is provided with a passage or slot through which the other end of the band is ad'apted to be passed. A suitable key, preferably a cotter pin, is utilized" to place the band under tension and the slot or passage through which the band extends is shaped v to effect an automatic locking of the band against l'oosening.

A particularly important feature of the present invention consists in the automatic locking of the band to which we have referred, the tie member being so co'nfigurated that the mereact of placing tension upon the band will form on the band locking abutments ada ted to coo erate with the tie member in sue manner't at when pressure is removed from the key, the band will be 7 automatically maintained against inadvertent release, so that if desired the key may be actually withdrawn and will leave the parts in locked position. An im ortantconsideration in this regard is in the fact that no extraneous locking meansv is required.

' The idea of locking the clamping band after it has'been placed under tension has been heretofore accomplished, an example of such a construction being illustrated in the pat- I, eiit to Quemard. N0 1.461.290. In this patent, the band is pulled tight and is there. Be it known that we, RENE GOUIRAND after locked in position by extraneous means and more particularly a set screw.

Our device, in contradistinction, employs no extraneous means and does not, as many other prior patents do, depend upon fricautomatic 1y roduced'by the mere act of tightening the and, so that when the ti ht-;

ening operation is completed, the 100 is ready tov assume its functions. This is a pronouncedly novel feature in this art.

Features of the invention, other thanjhose .adverted to, will be apparent from the hereinafter detailed description and claims, when tion to maintain the band a ainst unlock-f mg. We provlde a positive ock which is read in conjunction with the accompanying drawings.

Figure 6 is a side elevation of the, con .structionof Figure 5. Flgure 7 is an end view of suchdevice the left hand side of Figure.

looking from 6; and,

Flgllms 9 and .am f agment :1.

grammatic views illustrating the manner in which the locking operation is effected, Fig. ure 8 be ng taken on the line 8-8 of Figure tand Figure 9 being taken on the line 9-9 of said figure.

In constructing the clamp of this invention in its preferred-form, we preferably Figure 2 is a plan view o-f'the construcstamp the tie member from sheet metal and thereafter'bend it into the form best shown clearly shown in Figure 1.

At substantially the base of the leg 2 a tongue 4 is stamped out to provide an opening 5 through which a band may be passed and formed in the leg 3 is an opening 6 substantially juxtaposed with the opening 5, but preferably slightly larger in height. Particular -attention is called to the fact that the top edge 7 of the opening 6 is curved after the manner of an arch, and said opening also preferably slightly tapers in an upward direction, as clearly shown in Figures 1 and 2.

In utilizing this tie member as a part of the clamp, one end of a metal band 8 is passed through the-opening 6 from the outside thereof andis returned upon itself beneath the free edge of the leg 3 for an appreciable distance as to the point 9 in Figure 4. l The band is then wrapped one or more times about the object 10 to be clamped, two complete turns being shown in Figure 4, and

each turn passes through the openings 5 and 6, as shown in this figure.

f After the desired number of turns have been obtained, a suitable key is brought into cooperation with the free end of the band which is thereupon rolled, as shown also in Figure 4:. For the purpose of illustration, I

4 have shown the key in Figure 3 as in the form of a cotter pin 11, although, if desired, a square key or any other suitable form of key may be employed. In Figure 6, a square key 11 isshown. When a cotter pin is employed, the free end of the band is introduced between the arms of the pin and the pin is thereupon rotated to roll up the band as illustrated in Figure 4.

At the commencement of the rolling oper ation, it will be found that the band rolls tighfil ,th ,ogenmggcg s wattag very easily and such would be the case until a sufiiciently large portion of the band has been rolled to bring theroll or coil 12 thus formed against the outer face of the leg 3.

Further rolling of the band will manifestly place the band under tension and as the rolling operation continues, the tension will becomegreater-to the end that the band may be drawn tightly about the object. 10.

As the tension on the band increases, the automatic locking means' of this invention comes intojoperah'on andlthe manner Yin? whicli'fthe: locking lis efiected willfnow described,

mend; anasiaaaai; foraefi s b l re y m d in, he. h nd. t ug deformation; of such band by;.the-; 'arched a7, and it; will :be fmani- Edit-12$ 1:65am" 155p the'coil 12, it s pressed yj; against the ailgh'edlor curved edge 3;

relatively pronounced I abutment 14f lthrongh the-eye; shawagga1;,saatanry locked against any of the cotter pin, makes it possible to exert great power to rotate this pin and this great power is applied to draw the band through the opening 6 and add additional portions of the band to the coil. The relatively great tension serves to deform the band as it is drawn through the opening 6, so that as each part of the band passes through the opening it is caused to transversel conform to the curvature of the edge 7. he coil or roll 12 is substantially cylindrical at the commencement of the tension operation and consequently there results by this deforma tion of the b and a slight stretching of the marginal edges. Thus as each marginal edge passes through the opening 6, it leaves the edge 7 in slightly stretched condition to bethereafter immediately wound upon the substantially cylindrical coil or roll 12. The conformation of the roll in practice causes the inner concave formation of the band to be reversed, so that it becomes exter'iorly concaved'beyond the edge 7, and is wound upon the roll in this form to produce a roll which is longitudinally slightly concave as is clearly apparent from Figure 3.

The result of this operation is that the reversal of the transverse configuration of the band occurs .as soon as it leaves the edge 7, and there is accordingly produced a reaction which draws the coil close to the edge 7 and produces at either margin of the band a tendency of the edge 7 to bite into the band while the band is simultaneously formed adjacent its margins into pronounced abutments.

This operation will be apparent from Figures 8' and 9. Figure 8 1s a section on.

the line 8-'8 of Figure 3, and it will be noted that this section is taken adjacent the marginal edge of the band. In this View, the line 8 shows the contour of the band at its longitudinal medial line and it will be noted from this figure that the band is appreciably distorted transversely to donform with the edge 7. The pronounced biting action of the edge 7 into the marginal portion of the band is here apparent and the abutment which results is designated 14, it being understood that this action will occur at both marginal portions of the band.

.Figure' 9 shows a section at the medial line the center of the band, there is little, if any, stretch ng and the biting action at this point is therefore not so pronounced, although a duced atfthis oint. p V, Figure 1,0 s owstheabutments 14..which' as h t: h t a dva sj'jdei medis pro- Two tendency to all loose even when the tension on the key is relieved, so that, in practice, itis found entirely feasible after the desired tension has been obtained to actuall" remove the key. ever, that it is within the purview of this invention to therefore lock the band by bending into divergent relation one or both of the free ends of the arms of the cotter pin, as shown in dotted lines in Figure 3, the purpose being to leave the key in position with the supplemental lock. This-supple mental lock is, in practice, however, not necessary as the automatic locking feature which we have described is entirely efi'ective in looking the parts in position.

- a tendency In the manufacture of devices such as have been described, we referably utilize in the formation of the tie member, material which, while sufiiciently strong to withstand the forces to'which it is sub ected, yet will yield sufiiciently in predetermined directions to bring about a novel and highly efiicient mode of operation of the tie member when placed under the action of these forces. For example, it will be noted that when a band is placed under appreciable v tially tension, this tension Wlll be borne mainly by the leg 3,.and such tension will be exerted against the epterior substantially flat side of the leg. Suc to react upon the tie member in two distinct directions. That is to say, itwill have to act in the direction of the arrow 15 in Figure 4 to force the base 1 tightly against the object 10, and by such force will simultaneously effect a slight bending of the leg 3 to render its. outer surface more or less concave. The combined result of these forces causes the le 3 to be pressed-tightly against the free e go '16 of tie member extending of the tongue 4 to'the free edge of the leg the base 1 which thereupon-serves as a support for this leg and precludes further appreciable bendin. At the same time, both the base 1' and t e projecting tongue 4 are bent by the band into conformity with the object 10. I

The result is as shown in Figure 4, wherein it will be apparent that there is a pracat thefhottom of the tically unbroken bridge from the free edge .3. Inasmuch asthe entire remainder of the circumference of the article 10 is unencom-' passedby the band, it therefore follows that the clamping action of the device will be uniform and positivethroughout the entire circumference of the article 1Q andthere will be absolutelyno tendency of the ar ticle-lOto crimp at any point in its circumference as is so frequently the case inhose clamps now m common use.

. Im-the plreferred practical form of the in-' t e tie member is constructed from shectmetal, although for. very heavy work,

vention,

We wish it understood, how- I 1 tension will have a tendency InFigures 5 to 7 of the drawings, .a.

with an extending transverse bead 18,

through which is'formed a slot 19. The forward face 20 of the bead is concave to conform to the shape of the roll 12? and the slot 1 9 is flared upwardly in the direction of' the face 20 to intersect therewith in an archlike edge 21, shown best in Figure 7 This edge 21 corresponds in function to the edge 7 of the other constructionand operates in the same'manner. The base may be provided with a slot 22 forattachment of one end of the band, though, if desired, the

band may be made to encircle the entire base instead of passin it through the slot 22, this arrangement being optional. The cast construction is of course not resilient, so that the particular mode of operation with reference .to conformation of the device to the article to be clamped, is not pres-' ent in the cast construction. Otherwise, the two arrangements function in substanthe same manner, and both provide the efiicient'lock to which we have referred. In conclusion, we wish to call attention to the fact that when the leg3 is drawn against the free edge 16 of the base, said edge engages with the bend of the band as shown at 23 in Figure 4 and tightly so that it cannot possibly slip. The an? chored end of the bandis thus also looked against inadvertent release.

It isalso to be noted that as the ban passes over the curved edge 7, it is distorted in one direction 'and as it is rolled u on the roll, this distortion is reversed making thev outside surface of the band adjacent the roll concave. This concavity serves to reinforce the band and conform and hold the locking abutments a ainst release.

The method f 100 ring a band as hereinbefore described also forms part of this invention.

The accompanying drawings illustrate the invention in the referred practical forms, but the invention is'to be understood as fullyvcommensurate with the appended claims.

Having thus fully descri ed theinvention, what we claim as new and desire to ,se-

cure by Letters Patent'is:

1.- A clamp embodying a beradaptedto be secured to one end of the bandand providedwith an opening through which the other endof the band is adapted to be passed and thereafter rolled, said opening being shaped to transversely distort the hand during its passage therethrough for the purpose-of precluding inadvertent retrograde movement of the band.

2. A clamp embodying band, a tie memlit) a band, a tie mem- I and a suitable key for rolling configurated to deform &

ber adapted to be secured to one end of the band and having an opening through which the other end of the band is adapted to be passed and thereafter rolled, said opening having a curvilinear contour, whereby the rolling of the band to place it under tension will draw the band over such curvilinear contour and distort it sufliciently to effectually lock the band against inadvertent loosening.

3. A clamp embodying a band, a tie member associated with one end of the band and provided with an'opening having a curved edge, the free endof the band being adapted to be passed through the opening and thereafter rolled to place the band under tension, said band, the tie member being shaped to force the band against said curved edge when placed under tension for the purpose of distorting the band and locking the band against retrograde movement.

4. A clamp embodying a band, a tie member associated with one end of the band and having an opening hrough which the opposite end of the band is adapted to be passed, said opening being provided-with a curved edge, and means operable upon the free end of the band beyond the curved edge for placing the band under tension and simultaneously drawing it against said edge for the purpose of deforming the band to lock it under tension.

5. A clamp embodying a band, a tie connected to one end of the band and. provided with an opening through which the other endof the band is adapted to be passed, means positioned beyond the opening and cooperable with the free end'of the band to .draw the band through the opening and place it under tension, said opening being the band during its passage therethrough to thereby preclude inadvertent retrograde shifting of the band.

6. A clamp embodying a band, a tie member secured to one end, of the band, and of substantially triangular cross section, said tie member being provided with an opening having a converging edge at its mouth and through which opening the other end of the band is adapted to be passed, and thereafter rolled, to place the band. under tension and force the band into gripping relation with the converging edge of the opening.

7. A clamp embodying-a sheet metal tic member of substantially triangular cross section, one leg of which is longer than the other and the base of which forms a continuatiomof the shorter leg and the longer leg of which extends beyond the free edge of the base, longer leg and 'both of which legs are provided with openings through which the other end ot fthe band is adapted toibe passed and therea a band secured at one end to the ter rolled and the opening in one of" said legs converging towards the apex of the tie member. I

8. A clamp embodying a sheet-metal tie member of substantially triangular cross section having apertured legs of unequal length, and a base forming a continuation of the shorter leg, a band having one end looped through an aperturein the longer leg and the other end of the band passed through apertures in both of the. legs, and means for rolling the free end of the band to place the band under tension and draw it tightly against the edge of the opening of the lon er leg, said opening havinga converging e ge adapted to distort the band and effect automatic locking of the band at the edge of the opening'and the tension on the band. be-

ing sufiiciently great to force the longer leg in the direction of the free edge of the base sufliciently to engage said free edge with the loop portion of the band and lock said looped end of the band against slipping.

9. A clamp embodying a band, a tie member anchored to one end of the band and also having an opening through which the other end of the band is passed, said opening having a converging edge, and a key cooperating with the free end of the band for rolling that portion of the band beyond the opening, whereby the band is drawn against the converging edge and distorted to form shoulders 1n the band beyond said edge, which shoulders engage with said edge and lock the band under tension, and the key being of sufficient length to project beyond the rolled portion of the band and being bent laterally to preclude unrolling of the rolled portion of the band, and to further lock the band under tension.

1Q. The hereindescribed method of looking a band under tension which consists in drawinga fiat metallic band under tension over a direction to draw the band tightly against said edge, thus distorting the normal transverse shape of the band whereby locking abutments are produced thereon, which abutments cooperate with said edge to have looking engagement therewith for the purpose of maintaining the band under tension.

11. The herein described method of locking a band under tension which consists in drawing a fiat metallic band under tension over an edge which is shaped out of con formity to the normal transverse shape of the band and sharply deflecting the band beyondsaid edge to effect a-distortion of the band, thus automatically forming in it abutments which have locking engagment'with the edge.

12. The herein described method of looking a band under tension which consists in' drawing a flat metallic band over a non-conforming edge by a force acting in adirection to draw the band tightly against said edge for a non-conforming edge by a force acting in the purpose of distorting the band to form therein a positivelock.

13. The herein described method of looking a band under tension which consists in drawing a flat metallic band under tension over an edge shaped to distort the transverse cross section of the band in one direction and simultaneously reversing the distorted cross RENE GOUIRAND. AUGUSTE PACHE. 

